Ashton Kutcher
The 'Two and a Half Men' actor has recently invested a lot of cash into a portfolio of start-up technology companies and while he'd like it to be a success, he says his main motivation is making people happy.

He said: "I'm looking for that thing that's so magical or so disruptive that you don't understand how it works. I really think that technology probably has the greatest potential to accelerate happiness of most things in the world.

"If I don't make money, but what we deliver to people is love and happiness and connectivity and friendship and health, and whatever it is ultimately leads to people's happiness, I'm fine with losing my money."

Ashton - who separated from wife Demi Moore last year - also revealed how he looks at his investments as if they're characters he's playing.

He told silicon Prairie News: "I break down a product the same way I break down a character I'm going to play. I try to get inside the mind of that person - the user, the consumer - and figure out why they're doing something and what they want from it. I spend a ton of time just using stuff and giving that feedback."